Electric pencil sharpener

Details Electric pencil sharpener Electric pencil sharpener

1999-08-31

2000-04-25

Holtje, Martie K.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

1906

Patent

active

D04235851

REFERENCES:
patent: D187120 (1960-01-01), Smith
patent: D227711 (1973-07-01), Kujiwara
patent: D377666 (1997-01-01), Yuen
patent: D396062 (1998-07-01), White et al.
patent: D406173 (1999-02-01), Chen
patent: 2822781 (1958-02-01), Burton
patent: 2900958 (1959-08-01), Johnson
patent: 3678975 (1972-07-01), Imanishi et al.

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